No definition available.

Name:	us-gaap_ClassOfStockDisclosuresAbstract
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- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

+ Details

Name:	us-gaap_SharesIssuedPricePerShare
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Data Type:	num:perShareItemType
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Period Type:	instant

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
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Period Type:	instant

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockRepurchasedDuringPeriodShares
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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Additional estimated repurchase of common stock during the period.

+ References

No definition available.

+ Details

Name:	usph_AdditionalEstimatedRepurchaseOfCommonStock
Namespace Prefix:	usph_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Bank credit agreement to permit share repurchases of common stock during the period.

+ References

No definition available.

+ Details

Name:	usph_BankCreditAgreementToPermitShareRepurchasesOfCommonStock
Namespace Prefix:	usph_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maximum percentage of repurchase of common stock during the period.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	srt_RangeAxis=srt_MaximumMember
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Period Type:

Common Stock (Details) - USD ($)	1 Months Ended	12 Months Ended
Common Stock (Details) - USD ($)	Mar. 31, 2009	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2008
Class of Stock Disclosures [Abstract]
Common stock authorized by the Board of Directors (in shares)	1,200,000			2,250,000
Total purchased shares (in shares)	859,499	0	0
Additional estimated shares (in shares)		131,176
Closing price (in dollars per share)		$ 114.35
Maximum [Member]
Class of Stock Disclosures [Abstract]
Percentage of repurchase of common stock	10.00%
Bank credit agreement to permit share repurchases of common stock	$ 15,000,000